Epidemiology

The mean incidence of intussusception is 74 per 100,000 among children <1 year of age.[6] Incidence of intussusception can vary significantly by geographic region with more cases occurring in Western Pacific countries (90 per 100,000 children <1 year old) than those in African countries (34 per 100,000 children <1 year old).[7]​ In the US, intussusception occurs in 18 to 56 per 100,000 infants.[8] 

Most cases occur in children under the age of 12 months. Peak incidence is between 5 and 9 months of age.[6][8][9][10]

Boys are more commonly affected than girls (ratio 2:1).[8][9]

In the US, racial variation has been demonstrated, with white infants less commonly affected (26-35/100,000) than black infants (30-50/100,000) and infants of other races (112-240/100,000).[8]

Since 1980, rates of intussusception-related hospitalization and intussusception-related death have been decreasing.[8][9]

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